EP 0506803 B1 19940511 - METHOD AND DEVICE FOR THE SYNCHRONIZATION BETWEEN A BASE RADIO STATION AND A MOBILE RADIO STATION IN A DIGITAL RADIOMOBILE SYSTEM.
Title (en)
METHOD AND DEVICE FOR THE SYNCHRONIZATION BETWEEN A BASE RADIO STATION AND A MOBILE RADIO STATION IN A DIGITAL RADIOMOBILE SYSTEM.
Title (de)
VERFAHREN UND ANORDNUNG ZUR SYNCHRONISIERUNG EINER BASISSTATION UND EINER MOBILEN STATION BEI EINEM DIGITALEN ÜBERTRAGUNGSSYSTEM.
Title (fr)
PROCEDE ET DISPOSITIF DE SYNCHRONISATION ENTRE UNE STATION DE RADIODIFFUSION DE BASE ET UNE STATION DE RADIODIFFUSION MOBILE DANS UN SYSTEME RADIOMOBILE NUMERIQUE.
Publication
Application
Priority
- EP 9002296 W 19901220
- IT 2284289 A 19891222
Abstract (en)
[origin: WO9110305A1] Method and device for the synchronization between a mobile radio station and a base station in a digital radiomobile system TDMA where the base station transmits a timeslot containing a preset frequency sinusoid. The method foresees to sample (according to different methods) the baseband demodulated signals and to measure the phase increases between two subsequent samplings. Increases are compared with an intermediate threshold value between 0 DEG and 180 DEG to construct a vector formed by a series of values referred to subsequent samplings, the current amount of which is calculated. The minimum value of this sum is then identified to approximatively synchronize the mobile station with the timeslot containing the sinusoid. Afterwards, the frequency offset between the local oscillator frequency and the base station one is calculated and corrected in order to correctly identify the timeslot containing the preamble for fine synchronization. Then the decoding of the message containing the station and the frame data is performed. The device performs this method, for instance with an implementation by means of a programmed processor.
IPC 1-7
IPC 8 full level
H04B 7/26 (2006.01); H04L 7/06 (2006.01); H04L 7/08 (2006.01); H04W 88/08 (2009.01); H04L 7/04 (2006.01)
CPC (source: EP US)
H04B 7/2675 (2013.01 - EP US); H04B 7/2681 (2013.01 - EP US); H04W 56/0035 (2013.01 - EP US); H04W 88/08 (2013.01 - EP US); H04L 2007/047 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE DK ES FR GB NL SE
DOCDB simple family (publication)
WO 9110305 A1 19910711; DE 69008866 D1 19940616; DE 69008866 T2 19941215; EP 0506803 A1 19921007; EP 0506803 B1 19940511; IT 1236978 B 19930512; IT 8922842 A0 19891222; IT 8922842 A1 19910622; US 5343497 A 19940830
DOCDB simple family (application)
EP 9002296 W 19901220; DE 69008866 T 19901220; EP 91901785 A 19901220; IT 2284289 A 19891222; US 85947392 A 19920814